United Airlines flight UA 1603: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 17:53 Las Vegas Harry Reid (LAS) 3 19:37 San Francisco (SFO) 3
UA 1603 Non-stop Boeing 737-800 (738) 1:44 Effective 2026-04-30 through 2026-05-20
Mon,Thu,Fri,Sun 18:22 Las Vegas Harry Reid (LAS) 3 20:10 San Francisco (SFO) 3
UA 1603 Non-stop Boeing 737 MAX 9 (7M9) 1:48 Effective 2026-02-12 through 2026-03-02
Mon-Fri,Sun 18:23 Las Vegas Harry Reid (LAS) 3 20:10 San Francisco (SFO) 3
UA 1603 Non-stop Boeing 737 MAX 8 (7M8) 1:47 Effective 2026-03-05 through 2026-03-27
Sat 18:23 Las Vegas Harry Reid (LAS) 3 20:10 San Francisco (SFO) 3
UA 1603 Non-stop Boeing 737 MAX 9 (7M9) 1:47 Effective 2026-03-07 through 2026-03-21
Sat 18:23 Las Vegas Harry Reid (LAS) 3 20:10 San Francisco (SFO) 3
UA 1603 Non-stop Boeing 737 MAX 8 (7M8) 1:47 Operates only on 2026-03-28
Daily 18:23 Las Vegas Harry Reid (LAS) 3 20:07 San Francisco (SFO) 3
UA 1603 Non-stop Boeing 737 MAX 8 (7M8) 1:44 Effective 2026-03-29 through 2026-04-29
Daily 18:23 Las Vegas Harry Reid (LAS) 3 20:07 San Francisco (SFO) 3
UA 1603 Non-stop Boeing 737 MAX 8 (7M8) 1:44 Effective from 2026-05-21
Daily 18:24 Las Vegas Harry Reid (LAS) 3 20:10 San Francisco (SFO) 3
UA 1603 Non-stop Boeing 737 MAX 9 (7M9) 1:46 Effective 2026-01-06 through 2026-02-11
Mon,Wed-Sun 21:30 San Francisco (SFO) 3 05:08 Atlanta (ATL) N
UA 1603 Non-stop Boeing 737 MAX 8 (7M8) 4:38 Effective 2026-02-12 through 2026-03-04
The flight arrives 1 day after departure.
Mon,Wed-Fri,Sun 21:30 San Francisco (SFO) 3 05:08 Atlanta (ATL) N
UA 1603 Non-stop Boeing 737-900 (739) 4:38 Effective 2026-03-05 through 2026-03-27
The flight arrives 1 day after departure.
Daily 21:30 San Francisco (SFO) 3 05:32 Atlanta (ATL) N
UA 1603 Non-stop Boeing 737 MAX 8 (7M8) 5:02 Effective 2026-03-29 through 2026-04-29
The flight arrives 1 day after departure.
Daily 21:30 San Francisco (SFO) 3 05:07 Atlanta (ATL) N
UA 1603 Non-stop Boeing 737 MAX 8 (7M8) 4:37 Effective from 2026-05-21
The flight arrives 1 day after departure.
Daily 22:45 San Francisco (SFO) 3 06:10 Indianapolis (IND)
UA 1603 Non-stop Airbus A320 (320) 4:25 Valid until 2026-01-04
The flight arrives 1 day after departure.
Mon 22:45 San Francisco (SFO) 3 06:10 Indianapolis (IND)
UA 1603 Non-stop Boeing 737 MAX 8 (7M8) 4:25 Operates only on 2026-01-05
The flight arrives 1 day after departure.
Daily 22:45 San Francisco (SFO) 3 06:47 Atlanta (ATL) N
UA 1603 Non-stop Boeing 737 MAX 8 (7M8) 5:02 Effective 2026-04-30 through 2026-05-20
The flight arrives 1 day after departure.
Non-Direct Flights:
Daily 17:53 Las Vegas Harry Reid (LAS) 3 06:47 Atlanta (ATL) N
UA 1603 1-stop Boeing 737-800 (738) 9:54 Effective 2026-04-30 through 2026-05-20
The flight arrives 1 day after departure.
Mon,Thu,Fri,Sun 18:22 Las Vegas Harry Reid (LAS) 3 05:08 Atlanta (ATL) N
UA 1603 1-stop Boeing 737 MAX 9 (7M9) 7:46 Effective 2026-02-12 through 2026-03-02
The flight arrives 1 day after departure.
Mon,Wed-Fri,Sun 18:23 Las Vegas Harry Reid (LAS) 3 05:08 Atlanta (ATL) N
UA 1603 1-stop Boeing 737 MAX 8 (7M8) 7:45 Effective 2026-03-05 through 2026-03-27
The flight arrives 1 day after departure.
Daily 18:23 Las Vegas Harry Reid (LAS) 3 05:32 Atlanta (ATL) N
UA 1603 1-stop Boeing 737 MAX 8 (7M8) 8:09 Effective 2026-03-29 through 2026-04-29
The flight arrives 1 day after departure.
Daily 18:23 Las Vegas Harry Reid (LAS) 3 05:07 Atlanta (ATL) N
UA 1603 1-stop Boeing 737 MAX 8 (7M8) 7:44 Effective from 2026-05-21
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:


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United Airlines flight UA 1603: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1603
17:53
Las Vegas Harry Reid (LAS) 3

19:37
San Francisco (SFO) 3
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:44, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1603
18:22
Las Vegas Harry Reid (LAS) 3

20:10
San Francisco (SFO) 3
Effective 2026-02-12 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 1:48, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1603
18:23
Las Vegas Harry Reid (LAS) 3

20:10
San Francisco (SFO) 3
Effective 2026-03-05 through 2026-03-27
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:47, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1603
18:23
Las Vegas Harry Reid (LAS) 3

20:10
San Francisco (SFO) 3
Effective 2026-03-07 through 2026-03-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:47, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1603
18:23
Las Vegas Harry Reid (LAS) 3

20:10
San Francisco (SFO) 3
Operates only on 2026-03-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:47, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1603
18:23
Las Vegas Harry Reid (LAS) 3

20:07
San Francisco (SFO) 3
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:44, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1603
18:23
Las Vegas Harry Reid (LAS) 3

20:07
San Francisco (SFO) 3
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:44, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA1603
18:24
Las Vegas Harry Reid (LAS) 3

20:10
San Francisco (SFO) 3
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:46, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1603
21:30
San Francisco (SFO) 3

05:08(+1)
Atlanta (ATL) N
Effective 2026-02-12 through 2026-03-04
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 4:38, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1603
21:30
San Francisco (SFO) 3

05:08(+1)
Atlanta (ATL) N
Effective 2026-03-05 through 2026-03-27
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:38, non-stop
Boeing 737-900 (739)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1603
21:30
San Francisco (SFO) 3

05:32(+1)
Atlanta (ATL) N
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:02, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1603
21:30
San Francisco (SFO) 3

05:07(+1)
Atlanta (ATL) N
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:37, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1603
22:45
San Francisco (SFO) 3

06:10(+1)
Indianapolis (IND)
Valid until 2026-01-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:25, non-stop
Airbus A320 (320)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1603
22:45
San Francisco (SFO) 3

06:10(+1)
Indianapolis (IND)
Operates only on 2026-01-05
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:25, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1603
22:45
San Francisco (SFO) 3

06:47(+1)
Atlanta (ATL) N
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:02, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA1603
17:53
Las Vegas Harry Reid (LAS) 3

06:47(+1)
Atlanta (ATL) N
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:54, 1-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA1603
18:22
Las Vegas Harry Reid (LAS) 3

05:08(+1)
Atlanta (ATL) N
Effective 2026-02-12 through 2026-03-02
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 7:46, 1-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA1603
18:23
Las Vegas Harry Reid (LAS) 3

05:08(+1)
Atlanta (ATL) N
Effective 2026-03-05 through 2026-03-27
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 7:45, 1-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA1603
18:23
Las Vegas Harry Reid (LAS) 3

05:32(+1)
Atlanta (ATL) N
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:09, 1-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA1603
18:23
Las Vegas Harry Reid (LAS) 3

05:07(+1)
Atlanta (ATL) N
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 7:44, 1-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:
  • Las Vegas Harry Reid (LAS) - Atlanta (ATL)
  • Las Vegas Harry Reid (LAS) - San Francisco (SFO)
  • San Francisco (SFO) - Atlanta (ATL)
  • San Francisco (SFO) - Indianapolis (IND)
All United Airlines flights
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